perfectBy Kevinon 8/23/2014

works like all the other anti phosphate products at what seems like a quarter of the price.

Rinse it first By Davidon 7/30/2014

David would recommend this product to a friend

I did my homework when it came to adding chemical media in my reef. I have no complaints with this GFO. My Phosphates levels are always nearly undetectable and no algea, just make sure you rinse well before use.

Performs well - But needs to be rinsed Very WellBy Alexon 7/19/2014

Alex would recommend this product to a friend

We used the High Capacity GFO first and it worked great. This time we decided that since we had a large reactor and plenty of space, we could use the GFO that wasn't as compacted to be a little cheaper . It worked for its primary purpose - get the phosphate out. It's just that we had to rinse it with several gallons (5-10) of water to get the dust out and it still left orange dust on the bottom of my sump. I think we will go back to the high capacity stuff after we go through this batch.

top notch phosphate removalBy swseipelon 7/6/2014

swseipel would recommend this product to a friend

This has been a great asset to my water treatment system removing phosphate due to my overfeeding my tank

Low phosphates!By Jameson 7/1/2014

James would recommend this product to a friend

Cleans the water like it says, put it in a reactor and let it work

Works GreatBy Christopher Kirklandon 6/25/2014

Christopher Kirkland would recommend this product to a friend

As always works very well, and lasts a long time. Keeps the algae at bay and the PO4 down to levels my SPS like.

Lower Phosphate Levels!By Vincenton 5/25/2014

Vincent would recommend this product to a friend

Was experiencing Phosphate levels of .10 ppm set this up with the BRS dual reactor. After 24 hrs PO4 dropped to .05 ppm and after 48 hrs PO4 dropped to .01 ppm. Thanks BRS!

AWESOME!By Stephaneon 5/23/2014

Stephane would recommend this product to a friend

I had problems with phosphates and every product i used temporary lowered my levels for only a few days, and even then only had them down to 0.04. I decided to order this product along with the BRS reactor and i am not disappointed. I had this stuff in for about 1 week and on the 2nd day, i had 0 and i mean 0 phosphates!

gfoBy alfredoon 5/19/2014

alfredo wouldn't recommend this product to a friend

great stuff definitely lowers ur po4sl

Great product just dustyBy Christopheron 5/12/2014

Christopher would recommend this product to a friend

I have used this GFO for a few months now and have had no issues other than the typical dust that comes with all gfo products. I just run 2 gallons of ro water through it and have no complaints!

Great product that does what it saysBy Ericon 5/7/2014

Eric would recommend this product to a friend

This stuff is great and absolutely reduced my phosphates. I've also used the high capacity. The bulk gfo does clump quite a bit and produces dust. I buy the high capacity now with no problems. Great stuff though.

Good Value...but needs frequent changingBy Danielon 5/3/2014

Daniel would recommend this product to a friend

This media is a great value, the cost is well worth it for the performance it provides. The only reason I didn't give it a five was for the fact that it solidifies faster than the BRS High Capacity GFO when dosing 2-part.